Such was Egypt. Isolated as it was from the rest of the world, and full of fertility and riches, it offered a marked and definite object to the ambition of a conqueror. In fact, on account of the peculiar interest which this long and narrow valley of verdure, with its wonderful structures, the strange and anomalous course of nature which prevails in it, and the extraordinary phases which human life, in consequence, exhibits there, has always excited among mankind, heroes and conquerors have generally considered it a peculiarly glorious field for their exploits. Cyrus, the founder of the Persian monarchy, contemplated the subjugation of it. He did not carry his designs into effect, but left them for Cambyses his son. Darius held the country as a dependency during his reign, though, near the close of his life, it revolted. This revolt took place while he was preparing for his grand expedition against Greece, and he was perplexed with the question which of the two undertakings, the subjugation of the Egyptians or the invasion of Greece, he should first engage in. In the midst of this uncertainty he suddenly died, leaving both the wars themselves and the perplexity of deciding between them as a part of the royal inheritance falling to his son. Xerxes decided to prosecute the Egyptian campaign first, intending to postpone the conquest of Greece till he had brought the valley of the Nile once more under Persian sway. He deemed it dangerous to leave a province of his father's empire in a state of successful rebellion, while leading his armies off to new undertakings. Mardonius, who was the commander-in-chief of the army, and the great general on whom Xerxes mainly relied for the execution of his schemes, was very reluctant to consent to this plan. He was impatient for the conquest of Greece. There was little glory for him to acquire in merely suppressing a revolt, and reconquering what had been already once subdued. He was eager to enter upon a new field. Xerxes, however, overruled his wishes, and the armies commenced their march for Egypt. They passed the land of Judea on their way, where the captives who had returned from Babylon, and their successors, were rebuilding the cities and reoccupying the country. Xerxes confirmed them in the privileges which Cyrus and Darius had granted them, and aided them in their work. He then went on toward the Nile. The rebellion was easily put down. In less than a year from the time of leaving Susa, he had reconquered the whole land of Egypt, punished the leaders of the revolt, established his brother as viceroy of the country, and returned in safety to Susa. All this took place in the second year of his reign. CHAPTER III. DEBATE ON THE PROPOSED INVASION OF GREECE. B.C. 481